Interactive and Non-Interactive Modes

Two other methods for accessing the zone and for executing commands
inside the zone are also provided by the zlogin command.
These methods are interactive mode and non-interactive mode.

Interactive Mode

In interactive mode, a new pseudo-terminal is allocated for use
inside the zone. Unlike console mode, in which exclusive access to the console
device is granted, an arbitrary number of zlogin sessions
can be open at any time in interactive mode. Interactive mode is activated
when you do not include a command to be issued. Programs that require a terminal
device, such as an editor, operate correctly in this mode.

Non-Interactive Mode

Non-interactive mode is used to run shell-scripts which administer
the zone. Non-interactive mode does not allocate a new pseudo-terminal. Non-interactive
mode is enabled when you supply a command to be run inside the zone.